Thermo Fisher Scientific CyberScan CON 11/CON 110 - Manual (Page 71)

Instruction Manual CON 11/110
67
12 TROUBLE SHOOTING
Problem Cause Solution
No display when
‘ON’ key is pressed a) Batteries not in place
b) Batteries not in correct polarity (+
and – position)
c) Weak batteries
d) No AC power to adapter (if this
optional accessory is used)
a) Check that batteries are in
place and making good
contact
b) Re-insert batteries with correct
polarity
c) Replace batteries
d) Check power to AC adapter
Unstable readings a) Air bubbles in electrode.
b) Dirty electrode
c) Electrode not deep enough in
sample
d) External noise pickup or induction
caused by nearby electric motor
e) Electrode guard not attached
a) Tap electrode to remove
bubbles, move electrode away
from bubbles is present in
sample
b) Clean the electrode and re-
calibrate
c) Make sure sample entirely
covers the electrode sensors
d) Move or switch off interfering
motor.
e) Attach electrode guard
Slow response a) Dirty / Oily electrode a) Clean electrode. See
“Electrode Care &
Maintenance”, page 65
Meter is not
responding to key
press. a) HOLD mode in operation
a) Press the HOLD/ENTER key
to cancel the HOLD mode
ATC indicator blinks
and temperature
display shows “Ur” a) Improper attachment of electrode
to the meter
b) electrode built-in temperature
sensor cable connection has
broken
a) Check that the electrode
connects properly to the meter
b) Replace electrode